This diamond engagement ring features a 3.18ct Cut-Cornered Rectangular Modified Brilliant Diamond. The diamond is GIA certified as natural and has color grade of G and clarity grade of VS1. GIA REPORT 16439436 The ring is 95% pure platinum and 5% iridium. It weighs 5.28grams. The ring also contains ten small round brilliant diamonds that are prong set on top of the shank. The round stones are uniform in size and have a combined total weight of 0.17carats. The center stone is set in a basket with four prongs.